Cam and valvetrain longevity....??? low duration high lift...
09-15-2016, 10:34 PM
#25
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iTrader: (3)
Some guys do it the other way too. Run a hydraulic roller on a solid "tight lash" camshaft.
I've noticed some cam cards from custom cam guys, where the lash settings were crossed out, and handwritten "HYD" on the cam card. Wonder if they really are running a tight lash solid profile, and dont even know it. A "cheater" cam so to speak.
I've noticed some cam cards from custom cam guys, where the lash settings were crossed out, and handwritten "HYD" on the cam card. Wonder if they really are running a tight lash solid profile, and dont even know it. A "cheater" cam so to speak.
09-15-2016, 10:38 PM
#26
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Mild has a grind that seemed to really wake it up on the computer, the existing numbers were within a few HP of my dyno sheet, I am going to contact a few to get overall opinions, Dean Gellner just did 540's making 706, I am going to talk to him, and Cam Motion direct, and a few others like Comp, Erson and such...
what is your grind? EVERYONE has so fasr told me I need to be in the 250'[email protected].... to start..
what is your grind? EVERYONE has so fasr told me I need to be in the 250'[email protected].... to start..
I am still shocked what little difference yours was from 5,500-6,000. Gellner was doing a lot of 540's a few years back and getting a solid 650 hp with custom comp grind and dart pro one 310's. Be sure and pm me what you find out from him to make sure it's not the same cam cause I have those numbers. He evidently has something new. Did Bob recommend the 325's? Pm me your ph number if you'd like and I will give you a shout.
09-15-2016, 10:43 PM
#27
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Looks like another Cam thread. What most don't realize is when the lift increases on a Lobe , the Duration also has to increase . Because of Valvetrain Stability. The magic bullet , high lift low duration cams, have a built in flaw . There is not enough Duration on the lobe to control bounce and loft. Everyone thinks that a lifter follows the lobe exactly. Not true. You have what is called Loft , at increasing RPM , the Lifter does not want to follow the lobe . Inertia takes over and objects in motion tend to stay in motion.
Thus the lifter jumps the nose of the lobe , and tries to land gracefully on the backside of the lobe. If it lands to far down the lobe , it bounces. Which sets up a Harmonic through the whole Valvetrain , The only solid points to dampen the Oscillations are , the Lifter and Lobe interface , and the Valve to Seat Interface. Resulting in Valves and Valve Seats that have been beaten to **** , Or Lifters that break due to the severe harmonic ( Bounce ) that is placed on them.
I know the theory , and the brain trust , behind the Magic Bullets. Trust me there is no magic bullet. If a name brand cam company doesnt have the lobe
configuration your looking for, There is a good reason why. That Reason is Thousands of Hours , and Millions of Dollars of R&D into Master Cam Lobe developement. That
actually works .
Thus the lifter jumps the nose of the lobe , and tries to land gracefully on the backside of the lobe. If it lands to far down the lobe , it bounces. Which sets up a Harmonic through the whole Valvetrain , The only solid points to dampen the Oscillations are , the Lifter and Lobe interface , and the Valve to Seat Interface. Resulting in Valves and Valve Seats that have been beaten to **** , Or Lifters that break due to the severe harmonic ( Bounce ) that is placed on them.
I know the theory , and the brain trust , behind the Magic Bullets. Trust me there is no magic bullet. If a name brand cam company doesnt have the lobe
configuration your looking for, There is a good reason why. That Reason is Thousands of Hours , and Millions of Dollars of R&D into Master Cam Lobe developement. That
actually works .
09-15-2016, 10:45 PM
#28
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iTrader: (5)
Package package package
Leave it alone or improve your entire package , maybe carbs, intakes, exhaust, and Cams....just doing cams Alone won't make you happy.
Good luck and you definitely deserve to be happy with your build.
Leave it alone or improve your entire package , maybe carbs, intakes, exhaust, and Cams....just doing cams Alone won't make you happy.
Good luck and you definitely deserve to be happy with your build.
09-15-2016, 10:46 PM
#29
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Btw I am willing to try a couple on new builds. Help would be nice if anyone is up to it. I'm always up for trying something new. Nothing ventured nothing gained.
09-15-2016, 10:49 PM
#30
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iTrader: (7)
Bck 548 build loved more intake and carb. 305 cnc heads though
If I recall OP has some clearance issues. Might have to cut some holes. You know.
Be very interesting to put a edelbrock R intake with a 1050 dom
If I recall OP has some clearance issues. Might have to cut some holes. You know.
Be very interesting to put a edelbrock R intake with a 1050 dom
Last edited by getrdunn; 09-15-2016 at 10:56 PM.
